When I was reading Moe's post before yours, my feeling was one of irritation and I thought that Toyota, Honda, Ford or GM don't just offer one saloon car, one station wagon, one SUV, one pickup, but a whole range of each with different features, at different costs, often overlapping.
The car analogy falls down with upgrades, though; there, you have to turf in the old vehicle. With software, you keep both the old and the new.
Perhaps it would be enlightening if Moe realised that there are two types of Ulead software ranges, the very popular entry level and the pro level. I consider VS and MF in the former category and MSP and WS in the latter one. I agree, nevertheless, that there are too many different "cut-down" versions, mainly used for bundling. If pushed to it, I might even say that it may have been a mistake to include a version of MF2 with MSP7 but one has to take it into historical context. At the time of the MSP7 release, WS was still in version 1 and the advantages over MF2 were not as obvious as between WS2 and even MF4 today. Therefore, MF2 was used for authoring, mainly because it was possible to supply it to handle AC3 2/0 audio. I would imagine that if the choice were to be made today, it would possibly be different.
The important point to understand is that entry-level software must have a short learning curve, while pro stuff needs flexible features. The two cannot be reconciled.
P4 Core 2 Duo 2.6 GHz/Elite NVidia NF650iSLIT-A/2 Gb dual channel FSB 1333 MHz/Gainward NVidia 7300/2 x 80 Gb, 1 x 300 Gb, 1 x 200 Gb/DVCAM DRV-1000P drive/ Pan NV-DX1&-DX100/MSP8/WS2/PI11/C3D etc.